What is CVE-2023-28623?

CVE-2023-28623 is a medium-severity vulnerability in Zulip, classified under Improper Authorization. CVSS score: 6.5/10. Published 2023-05-19.

How severe is CVE-2023-28623?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Zulip

CVE-2023-28623

Zulip is an open-source team collaboration tool with unique topic-based threading. In the event that 1: `ZulipLDAPAuthBackend` and an external authentication backend (any aside of `ZulipLDAPAuthBackend` and `EmailAuthBackend`) are the only…

EPSS: 0.002 (37.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Zulip — versions >= 2.1.0, < 6.2

Weakness classification (CWE)

References

https://github.com/zulip/zulip/security/advisories/GHSA-7p62-pjwg-56rv (x_refsource_CONFIRM)
https://github.com/zulip/zulip/commit/3df1b4dd7c210c21deb6f829df19412b74573f8d (x_refsource_MISC)

Frequently asked questions

What is CVE-2023-28623?: CVE-2023-28623 is a medium-severity vulnerability in Zulip, classified under Improper Authorization. CVSS score: 6.5/10. Published 2023-05-19.
How severe is CVE-2023-28623?: Medium severity. CVSS v3 base score is 6.5 out of 10.